Iowa State has finished a clean sweep at running back for its 2019 recruiting class.

Two of its targets, Leonard Glass and Breece Hall, had already committed to the Cyclones. And on Friday, Illinois four-star running back Jirehl Brock — one of Matt Campbell's top 2019 priorities all along — committed to Iowa State during an announcement at his school.

Brock picked the Cyclones over Minnesota and Northwestern. Purdue and Iowa had also originally been in his final five.

The 6-foot, 200-pound bruiser is a consensus four-star recruit. 247Sports ranks Brock the No. 137 prospect in 2019 and the No. 7 running back in the class. Rivals ranks him No. 194 overall and No. 10 among running backs. He rushed for 1,588 yards and 23 touchdowns last year for Quincy High.

Hall, who figures to compete with Brock for carries, approved of his decision via Twitter.

Iowa State was always considered a strong contender for two main reasons. One: Brock compares to current Cyclone David Montgomery, and coaches were quick to remind him of that. And two: Brock had longstanding, strong relationships with the coaching staff — especially running backs coach Nate Scheelhaase, who gave Brock an offer in January when he was still coaching at Illinois.

"Coach Scheelhaase and I have had a pretty good relationship because he was the person that offered me to Illinois. We’ve had a really good relationship since," Brock told the Register in May. "Coach Campbell, I mean, he’s just a great guy. He’s been to one of my basketball games. People really think highly of him, and I do as well. He came in to a team that wasn’t so good — they had a few rough years — but I really do think that he’s turning the program around to something that it hasn’t been in a while."

Brock was also intrigued by the freedom afforded to running backs in Iowa State's offense.

"It’s different," he said. "When you run in an offense where there’s 11 people in the box every play, it’s kind of hard to maneuver around that. Looking at how open their offense is kind of makes it relieving."

And Brock's commitment also means Iowa State is now very likely done recruiting running backs for its 2019 class, which is up to 17 pledges. Brock is the Cyclones' highest-rated 2019 recruit.

Matthew Bain covers college football and basketball recruiting for the Des Moines Register. He also helps out with Iowa and Iowa State football and basketball coverage for HawkCentral and Cyclone Insider. Contact him at mbain@dmreg.com and follow him on Twitter @MatthewBain_.